ASTROSAT CZTI

Data Quality Report

Orbit 14270

Creation date: 2024-06-27T16:52:43.021219
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G08_014T01_9000002104_14270cztM0_level2.evt modeM0/AS1G08_014T01_9000002104_14270cztM0_level2_quad_clean.evt
Size (bytes)609,675,840113,267,520
Size581.4 MB 108.0 MB
Events in quadrant A3,686,171774,293
Events in quadrant B3,764,949776,577
Events in quadrant C3,836,724743,288
Events in quadrant D6,693,228639,861

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179
B01812
C01911
D02314

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015810
B015616
C015911
D015717

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168711502
B0171071565
C0170131478
D0272512787

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7161220.307220%
B7143400.559989%
C7166160.223277%
D6999100714.387770%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 14156 7460 3 3 0.02% 0.04%
B 14156 7440 7 7 0.05% 0.09%
C 14156 7450 1 1 0.01% 0.01%
D 14156 7348 811 811 5.73% 11.04%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 189 94981 512.55 920 902 183.6
A 4 2 19610 101.92 920 902 183.6
A 8 15 19184 99.6 920 902 183.6
B 0 229 113194 660.45 907 887 170.0
B 4 48 41600 239.42 907 887 170.0
B 15 201 19538 109.68 907 887 170.0
C 3 233 338581 1652.51 895 903 204.3
C 13 61 6342 26.62 895 903 204.3
C 14 234 4796 19.05 895 903 204.3
D 5 222 2813726 14618.14 819 801 192.4
D 8 195 310001 1606.84 819 801 192.4
D 12 110 265029 1373.13 819 801 192.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter